Regular AC maintenance can often spot parts that may be starting to fail before they actually fail
Warranty void if basic maintenance procedures are not followed, or if failure results from misuse, abuse, or overheating.
[DOI] [PMC free article] [PubMed] [Google Scholar] 58.Renne RA, Wehner AP, Greenspan BJ, Deford HS, Ragan HA, Westerberg RB, et al
PLoS One (2014) 9(7):e102910.10.1371/journal.pone.0102910 28 Barrington-TrimisJLNielsenSSPreston-MartinSJames GaudermanWHollyEAFarinFMet alParental smoking and risk of childhood brain tumors by functional polymorphisms in polycyclic aromatic hydrocarbon metabolism genes
If your pipe has been out for a few hours (or a few days) already, it is sometimes necessary to remove a little bit of ashes at the top of the bowl before lighting it up again